A flexible alloy screen and its manufacturing method

Abstract

The present invention provides a flexible alloy screen and a manufacturing method thereof, wherein the screen has good strength and certain toughness, and comprises a plastic film, wherein a conductive layer is arranged on any one or both sides of the plastic film, an alloy mesh is arranged outside the conductive layer, an emulsion layer is coated on the portion of the outer side of the alloy mesh without a pattern, a first printed pattern is arranged on the plastic film, a second printed pattern matching the first printed pattern is arranged on the alloy mesh, and a third printed pattern matching the first printed pattern is arranged on the emulsion layer.

Description

Technical Field

[0001] The invention relates to the technical field of screen printing plates, in particular to a flexible alloy screen printing plate and a manufacturing method thereof. Background Art

[0002] Screen technology has the advantages of simple process, large graphic design space, and suitability for large-scale production, and has become a widely used technology in the electronics field. Taking the field of solar cells as an example, the printed screen is an important tool for printing the electrodes of solar cells. The printed screen generally includes a screen frame and a mesh stretched in the screen frame. Conductive slurry is poured on the screen, and a scraper is used to drive the conductive slurry to move on the mesh, so that the conductive slurry is squeezed onto the solar cell through the printed pattern on the mesh, forming a corresponding pattern on the solar cell to form the electrode of the solar cell.

[0003] At present, in order to meet the strength of the screen, alloy materials are used in the selection of mesh materials. However, although the screen made of alloy materials has higher strength, its toughness is relatively poor, and it is easy to burst or crack, and there are certain defects in its service life. Summary of the invention

[0004] The present invention aims to avoid the deficiencies of the prior art and provides a flexible alloy screen, which has good strength and certain toughness.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] A flexible alloy screen comprises a plastic film, a conductive layer is arranged on any one or both sides of the plastic film, an alloy mesh is arranged outside the conductive layer, an emulsion layer is coated on the patternless portion of the outer side of the alloy mesh, a first printed pattern is arranged on the plastic film, a second printed pattern matching the first printed pattern is arranged on the alloy mesh, and a third printed pattern matching the first printed pattern is arranged on the emulsion layer.

[0007] The invention of this application has the following beneficial effects:

[0008] In the present application, a plastic film and an emulsion layer are arranged in the flexible alloy screen, which improves the toughness of the entire screen, and the required pattern is opened on the plastic film and the emulsion layer by laser cutting, which is highly practical, and the emulsion layer located on the surface can have a buffering effect, thereby reducing the possibility of cracking or bursting of the screen as a whole and extending the service life.

[0009] Preferably, the alloy mesh is made of nickel alloy material, and the thickness of the alloy mesh is 3-300 μm.

[0010] Preferably, the plastic film is one or more of PI, PU, ​​PE, TPE, PET, PVC, and PMMA materials, and the thickness of the plastic film is 1-30 μm.

[0011] Preferably, the conductive layer is copper, nickel or tin doped indium oxide, and the thickness of the conductive layer is 1-500 nm.

[0012] Preferably, the width of the first printed pattern is 80 nm-100 μm, the width of the second printed pattern is 40 nm-200 μm, and the width of the third printed pattern is 40 nm-200 μm.

[0013] Preferably, the thickness of the emulsion layer is 0.1-15 μm.

[0014] The present invention also provides a method for making a flexible alloy screen, comprising the following steps:

[0015] Step 1: Performing metallization treatment on any one or both surfaces of the plastic film to form a conductive layer;

[0016] Step 2: coating a photosensitive material layer on the outer side of the conductive layer;

[0017] Step 3: performing alignment exposure and development on the photosensitive material layer;

[0018] Step 4: electroforming the outer side of the photosensitive material layer to produce an alloy mesh;

[0019] Step 5: Coat the outer layer of the alloy mesh with latex to make a prefabricated screen;

[0020] Step 6: Bake the prefabricated screen;

[0021] Step 6: Demolding the prefabricated screen;

[0022] Step 7: Combine the prefabricated mesh net with the mesh frame;

[0023] Step 8: Molding the patterns on the plastic film and the latex layer and making them consistent with the patterns on the alloy mesh to obtain a finished flexible alloy screen.

[0024] The invention of this application has the following beneficial effects:

[0025] The present invention first forms a conductive layer on the surface of a plastic film through metallization treatment so that it can conduct current, then coats a photosensitive material layer on the outside of the conductive layer, and performs alignment exposure and development on it, then electroforms the photosensitive material layer into an alloy mesh, then coats the outside of the alloy mesh with latex, and bakes it to form a semi-finished screen, and then goes through demolding, stretching and other manufacturing processes to combine it with a screen frame, and finally forms the pattern on the plastic film through laser, so that the pattern on the plastic film matches the pattern on the alloy mesh, thereby manufacturing a finished flexible alloy screen. The flexible alloy screen manufactured in this way has high strength and high toughness, and the outside of the screen also has an emulsion layer with a buffering effect, so it has a longer service life than the flexible alloy screens currently on the market.

[0026] Preferably, in step one, a conductive layer is deposited on the surface of the plastic film by a coating device, and the thickness of the deposited layer is 1-500 nm.

[0027] Preferably, in step eight, the pattern on the plastic film is formed by laser, and the equipment is a laser machine.

[0028] Preferably, in step 2, the photosensitive material layer is coated by dry film or wet film method, and the coating thickness is 0.2-150 μm. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the cross-sectional structure of a first structure of a flexible alloy screen of the present invention.

[0030] Figure 2 It is a schematic diagram of the cross-sectional structure of the second structure of a flexible alloy screen in the present invention.

[0031] Description of the drawings: 1. Alloy mesh, 2. Plastic film, 3. Emulsion layer, 4. Conductive layer, 5. First printed pattern, 6. Second printed pattern, 7. Third printed pattern. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Specific reference Figure 1-Figure 2 :

[0034] The present invention provides a flexible alloy screen, comprising a plastic film 2, a conductive layer 4 is arranged on any one or both sides of the plastic film 2, an alloy mesh 1 is arranged outside the conductive layer 4, an emulsion layer 3 is coated on the portion of the outer side of the alloy mesh 1 without a pattern, a first printed pattern 5 is arranged on the plastic film 2, a second printed pattern 6 matching the pattern of the first printed pattern 5 is arranged on the alloy mesh 1, and a third printed pattern 7 matching the pattern of the first printed pattern 5 is arranged on the emulsion layer 3. In the present application, a layer of plastic film 2 and an emulsion layer 3 are arranged in the flexible alloy screen, the toughness of the entire screen is improved, and the required pattern is opened on the plastic film 2 and the emulsion layer 3 by laser cutting, which has strong practicality, and the emulsion layer 3 located on the surface can have a buffering effect, which reduces the possibility of cracking or bursting of the screen as a whole and prolongs the service life.

[0035] In this embodiment, the alloy mesh 1 is made of nickel alloy material, and the thickness of the alloy mesh 1 is 3-300 μm. In this way, the nickel alloy has good mechanical, physical and chemical properties, and has excellent oxidation resistance, corrosion resistance and high temperature strength, which can meet the use requirements.

[0036] In this embodiment, the plastic film 2 is one or more of PI, PU, ​​PE, TPE, PET, PVC, and PMMA. The thickness of the plastic film 2 is 1-30 μm. A composite method of multiple plastic films can also be used, and is not limited to plastic films of the above materials.

[0037] In this embodiment, the conductive layer 3 is copper, nickel or tin doped indium oxide, and the thickness of the conductive layer 3 is 1-500 nm, which has a good conductive effect.

[0038] In this embodiment, the width of the first printed pattern 5 is 80 nm-100 μm, the width of the second printed pattern 6 is 40 nm-200 μm, and the width of the third printed pattern 7 is 40 nm-200 μm.

[0039] In this embodiment, the thickness of the emulsion layer 3 is 0.1-15 μm.

[0040] The present invention also provides a method for making a flexible alloy screen, comprising the following steps:

[0041] Step 1: Performing metallization treatment on any one or both surfaces of the plastic film to form a conductive layer;

[0042] Step 2: coating a photosensitive material layer on the outer side of the conductive layer;

[0043] Step 3: performing alignment exposure and development on the photosensitive material layer;

[0044] Step 4: electroforming the outer side of the photosensitive material layer to produce an alloy mesh;

[0045] Step 5: Coat the outer layer of the alloy mesh with latex to make a prefabricated screen;

[0046] Step 6: Bake the prefabricated screen;

[0047] Step 6: Demolding the prefabricated screen;

[0048] Step 7: Combine the prefabricated mesh net with the mesh frame;

[0049] Step 8: Molding the patterns on the plastic film and the latex layer, and making them consistent with the patterns on the alloy mesh, to obtain a finished flexible alloy screen. The present invention first forms a conductive layer on the surface of the plastic film by metallization treatment, so that it can conduct current, then coats a photosensitive material layer on the outside of the conductive layer, and performs alignment exposure and development, then makes the photosensitive material layer into an alloy mesh by electroforming, and then coats the outside of the alloy mesh with latex, and bakes it to form a semi-finished screen, and then goes through demoulding, net stretching and other manufacturing processes, and combines it with the screen frame, and finally shapes the pattern on the plastic film by laser laser, so that the pattern on the plastic film matches the pattern on the alloy mesh, thereby making a finished flexible alloy screen, the flexible alloy screen produced in this way has high strength and high toughness, and the alloy screen also has a buffering emulsion layer on the outside, which is more durable and has a longer service life than the flexible alloy screen currently on the market.

[0050] In this embodiment, in step one, a conductive layer is deposited on the surface of the plastic film by a coating device, and the thickness of the deposited layer is 1-500 nm, so that a conductive layer is formed on the outside of the plastic film to facilitate the subsequent electroforming process of the alloy mesh.

[0051] In this embodiment, in step eight, the pattern on the plastic film is formed by laser processing, and the equipment is a laser machine.

[0052] In this embodiment, in step 2, the photosensitive material layer is coated by dry film or wet film method, and the coating thickness is 0.2-150 μm.

[0053] In this embodiment, in step three, the Heidelberg DWL4000 is used for alignment exposure, and the cosmic developing equipment is used for development.

[0054] In this embodiment, the material of the latex agent is Swiss 1504 oily thick-plate photosensitive adhesive SBQ.

[0055] In this embodiment, the equipment for baking the prefabricated screen is a constant temperature drying oven, the baking temperature is 120℃-200℃, and the time is 60 minutes. In this way, a hard film is formed on the outside of the metal screen through hard film treatment, which can greatly improve the water resistance and printing resistance.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for making a flexible alloy screen, characterized in that: The invention comprises a plastic film, wherein a conductive layer is arranged on any one or both sides of the plastic film, an alloy mesh is arranged outside the conductive layer, an emulsion layer is coated on the portion of the outer side of the alloy mesh without a pattern, a first printed pattern is arranged on the plastic film, a second printed pattern matching the first printed pattern is arranged on the alloy mesh, and a third printed pattern matching the first printed layer pattern is arranged on the emulsion layer. The manufacturing method of the above-mentioned flexible alloy screen comprises the following steps: Step 1: Performing metallization treatment on any one or both surfaces of the plastic film to form a conductive layer; Step 2: coating a photosensitive material layer on the outer side of the conductive layer; Step 3: performing alignment exposure and development on the photosensitive material layer; Step 4: electroforming the outer side of the photosensitive material layer to produce an alloy mesh; Step 5: coating an emulsion layer on the outer layer of the alloy mesh to make a prefabricated screen; Step 6: Bake the prefabricated screen in a constant temperature drying oven at a temperature of 120°C-200°C for 60 minutes. Step 6: Demolding the prefabricated screen; Step 7: Combine the prefabricated mesh net with the mesh frame; Step 8: Use laser to shape the patterns on the plastic film and the emulsion layer. The equipment is a laser machine, and it is consistent with the pattern on the alloy mesh to obtain a finished flexible alloy screen.

2. The method for making a flexible alloy screen according to claim 1, characterized in that: The alloy mesh is made of nickel alloy material, and the thickness of the alloy mesh is 3-300 μm.

3. The method for making a flexible alloy screen according to claim 1, characterized in that: The plastic film is one or more materials selected from PI, PU, ​​PE, TPE, PET, PVC, and PMMA, and the thickness of the plastic film is 1-30 μm.

4. The method for making a flexible alloy screen according to claim 1, characterized in that: The conductive layer is copper, nickel or tin-doped indium oxide, and the thickness of the conductive layer is 1-500 nm.

5. The method for making a flexible alloy screen according to claim 1, characterized in that: The width of the first printed pattern is 80nm-100μm, the width of the second printed pattern is 40nm-200μm, and the width of the third printed pattern is 40nm-200μm.

6. The method for making a flexible alloy screen according to claim 1, characterized in that: The thickness of the emulsion layer is 0.1-15 μm.

7. The method for making a flexible alloy screen according to claim 1, characterized in that: In step one, a conductive layer is deposited on the surface of the plastic film by a coating device, and the thickness of the deposited layer is 1-500 nm.

8. The method for making a flexible alloy screen according to claim 1, characterized in that: In step 2, the photosensitive material layer is coated by dry film or wet film method, and the coating thickness is 0.2-150 μm.

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